const {graphql} = require('graphql');

const schema = require('../../../../graph/schema');
const Context = require('../../../../graph/context');
const UsersService = require('../../../../services/users');
const SettingsService = require('../../../../services/settings');
const Asset = require('../../../../models/asset');
const CommentsService = require('../../../../services/comments');

const {expect} = require('chai');

describe('graph.queries.asset', () => {
  let assets, users, comments;
  beforeEach(async () => {
    await SettingsService.init();
    assets = await Asset.create([
      {id: '1', url: 'https://example.com/?id=1'},
      {id: '2', url: 'https://example.com/?id=2'}
    ]);
    users = await UsersService.createLocalUsers([
      {
        email: 'usernameA@example.com',
        password: 'password',
        username: 'usernameA'
      },
      {
        email: 'usernameB@example.com',
        password: 'password',
        username: 'usernameB'
      },
      {
        email: 'usernameC@example.com',
        password: 'password',
        username: 'usernameC'
      }
    ]);
    comments = await CommentsService.publicCreate([0, 0, 1, 1].map((idx) => ({
      author_id: users[idx].id,
      asset_id: assets[idx].id,
      body: `hello there! ${String(Math.random()).slice(2)}`,
    })));
  });

  it('will not show the same asset stream across multiple assets', async () => {
    const context = new Context({user: users[0]});

    const query = `
      fragment assetFragment on Asset {
        comments(query: {limit: 2}) {
          nodes {
            id
          }
          hasNextPage
        }
      }

      query assetQuery($id: ID!, $otherID: ID!) {
        asset(id: $id) {
          ...assetFragment
        }
        otherAsset: asset(id: $otherID) {
          ...assetFragment
        }
      }
    `;

    let res = await graphql(schema, query, {}, context, {id: assets[0].id, otherID: assets[1].id});
    if (res.errors) {
      console.error(res.errors);
    }
    expect(res.errors).is.empty;

    let {asset: {comments: asset}, otherAsset: {comments: otherAsset}} = res.data;

    expect(asset.nodes).to.have.length(2);
    expect(asset.hasNextPage).to.be.false;
    expect(asset.nodes.map(({id}) => id)).to.have.members(comments.slice(0, 2).map(({id}) => id));
    expect(otherAsset.nodes).to.have.length(2);
    expect(otherAsset.hasNextPage).to.be.false;
    expect(otherAsset.nodes.map(({id}) => id)).to.have.members(comments.slice(2, 4).map(({id}) => id));

    for (let node of asset.nodes) {
      for (let otherNode of otherAsset.nodes) {
        expect(node.id).to.not.equal(otherNode.id);
      }
    }
  });

  it('can get comments edge', async () => {
    const context = new Context({user: users[0]});

    const assetCommentsQuery = `
      query assetCommentsQuery($id: ID!) {
        asset(id: $id) {
          comments(query: {limit: 10}) {
            nodes {
              id
              body
              created_at
            }
            startCursor
            endCursor
            hasNextPage
          }
        }
      }
    `;
    const res = await graphql(schema, assetCommentsQuery, {}, context, {id: assets[0].id});
    const {nodes, startCursor, endCursor, hasNextPage} = res.data.asset.comments;
    expect(nodes.length).to.equal(2);
    expect(startCursor).to.equal(nodes[0].created_at);
    expect(endCursor).to.equal(nodes[1].created_at);
    expect(hasNextPage).to.be.false;
  });

  it('can query comments edge to exclude comments ignored by user', async () => {
    const context = new Context({user: users[0]});

    // Add the second user to the list of ignored users.
    context.user.ignoresUsers.push(users[1].id);

    const query = `
      query assetCommentsQuery($id: ID!, $url: String!, $excludeIgnored: Boolean!) {
        asset(id: $id, url: $url) {
          comments(query: {limit: 10, excludeIgnored: $excludeIgnored}) {
            nodes {
              id
              body
            }
          }
        }
      }
    `;

    {
      const res = await graphql(schema, query, {}, context, {
        id: assets[0].id,
        url: assets[0].url,
        excludeIgnored: true
      });
      expect(res.errors).is.empty;
      const {nodes} = res.data.asset.comments;
      expect(nodes.length).to.equal(2);
    }
  });

});
